Fotodiox Pro Lens Mount Adapter - Konica Auto-Reflex (AR) SLR Lens to Pentax K (PK) Mount SLR Camera Body Premium-grade Fotodiox "Pro" adapter Built-in Multi-Coated Glasses with 1.4x focal correction Removable Glasss Element for Macro Photography Top Notch Craftsmanship 24 Month Manufacturer Warranty